import pandas as pd

data = pd.read_csv('test.csv');
# print(data)

# data.to_csv('data.csv', index=None)
# describe = data.describe()
# print(1, describe.count)

# print(data[(data['1'].isin([2,3]))])
# data['1'].plot()

data.loc[2, '1'] = 6
# data.to_csv()